Windows 10: 90% CPU usage until I open task manager

Discus and support 90% CPU usage until I open task manager in Windows 10 BSOD Crashes and Debugging to solve the problem; When I open task manager my cpu usage is at 90% for like a second and then it goes back down to 5%. During that time I can see that Task Manager and... Discussion in 'Windows 10 BSOD Crashes and Debugging' started by Skylol, Nov 4, 2020.

  1. SKYLOL
    Skylol Win User

    90% CPU usage until I open task manager


    When I open task manager my cpu usage is at 90% for like a second and then it goes back down to 5%. During that time I can see that Task Manager and Runtime Broker is at high power usage and then they go back down. This is NOT slowing down my pc but I'm afraid that it could be a malware or something in the background. I even tried scanning for viruses and my pc is clean.

    :)
     
    Skylol, Nov 4, 2020
    #1
  2. NIOGENESIS
    Niogenesis Win User

    Task Manager High CPU Usage

    I have the same problem myself with it only happens when I scroll through task manager and open and close it. I don't know this for sure but the reason this probably happens is that you may have a lot of processes running and task manager is using a lot
    of the CPU to process the usage of each program.

    What I have done is disable data that I don't need to see like network usage and GPU usage and it drops the CPU usage a bit. I have also enabled everything and scrolled up and down on it and task manager uses almost twice as much.

    I would suggest disabling everything but CPU, disk, and RAM, (I would not suggest having GPU on because it is almost always at 99% unless you have FPS limits).
     
    Niogenesis, Nov 4, 2020
    #2
  3. WARPSTAR22
    Warpstar22 Win User
    CPU at 100% that goes away when opening Task Manager

    Thanks for your answer @Jay#222. I understand that a computer is doing a lot in the background. In that case above, I was using Adobe Lightroom which is heavy on the CPU but I might get this when I'm just using Google Chrome googling things. Its weird to
    me because upon opening the Task Manager, my CPU calms down when it might have been working hard for quite some time. My CPU might be working hard for 10 minutes and then upon opening Task Manager, it calms down. I'm sure if it listed the CPU usage prior to
    opening the Task Manager, it would be 90%-100% usage all prior. Is it something like the Task Manager flushes processes and that's why it drop significantly? And I mean it drops to the point where the fan will calm down and my laptop will not lag much.
     
    Warpstar22, Nov 4, 2020
    #3
  4. NELKAAPEKAA
    nelkaapekaa Win User

    90% CPU usage until I open task manager

    Cpu usage high until I open task manager

    So, whenever I open my task manager CPU usage is at 100% and thing that takes up 100% is something called " system interrupts ", but its only when I open the task manager, so when my task manager is closed my CPU usage is at 100% at all the times? Do
    I need to keep my task manager open to play games?...
     
    nelkaapekaa, Nov 4, 2020
    #4
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90% CPU usage until I open task manager

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